# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.187387 Archaea.71264 Euryarchaeota.56456 Methanosarcina.7856 Methanosarcina_mazei.4409 mmj.569 mmj:MSMAS_0550 Type I restriction-modification system, specificity subunit S; K01154 type I restriction enzyme, S subunit [EC:3.1.21.3]